From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pawel Osciak Subject: RE: [PATCH v3 1/8] ARM: Samsung: Add register definitions for Samsung S5P SoC camera interface Date: Mon, 02 Aug 2010 14:08:42 +0200 Message-ID: <003201cb323b$72f32df0$58d989d0$%osciak@samsung.com> References: <1279902083-21250-1-git-send-email-s.nawrocki@samsung.com> <1279902083-21250-2-git-send-email-s.nawrocki@samsung.com> <00ba01cb2c8f$02fc8480$08f58d80$%kim@samsung.com> <003001cb322d$fc976b10$f5c64130$%osciak@samsung.com> <20100802105216.GD30670@n2100.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7BIT Return-path: Received: from mailout3.w1.samsung.com ([210.118.77.13]:63962 "EHLO mailout3.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752146Ab0HBMKX (ORCPT ); Mon, 2 Aug 2010 08:10:23 -0400 In-reply-to: <20100802105216.GD30670@n2100.arm.linux.org.uk> Content-language: pl Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: 'Russell King - ARM Linux' Cc: 'Kukjin Kim' , Sylwester Nawrocki , linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kyungmin.park@samsung.com, linux-media@vger.kernel.org, Marek Szyprowski >Russell King - ARM Linux wrote: >On Mon, Aug 02, 2010 at 12:32:20PM +0200, Pawel Osciak wrote: >> Well, some of them are indeed unused, but it's not an uncommon practice in >> kernel and might help future developers. > >On the other hand, arch/arm is getting soo big that we need to do >something about this - and one solution is to avoid unnecessary >definitions that we're not using. > >Another good idea is to put definitions along side the drivers which >they're relevant to - maybe in a local driver-name.h file which >driver-name.c includes, or maybe even within driver-name.c if they're >not excessive. This has the advantage of distributing the "bloat" to >where its actually used, and means that the driver isn't dependent so >much on arch/arm or even the SoC itself. > >Take a look at arch/arm/mach-vexpress/include/mach/ct-ca9x4.h and >arch/arm/mach-vexpress/include/mach/motherboard.h - these are the only >two files which contain platform definitions which are actually used >for Versatile Express. Compare that with >arch/arm/mach-realview/include/mach/platform.h which contains lots >more... So basically, what you and Mauro are recommending is that we move the *.h file with register definitions to drivers/media? Best regards -- Pawel Osciak Linux Platform Group Samsung Poland R&D Center